Quiz about Problem Solving with Slope

Question 1

The scatter plot shows the the cost of gas per gallon during certain years.

What is the equation for the trend line in slope-intercept form.

Accepted Answer

y = .05x + .25

Answer

y = .25x + .05

Answer

y = x + .25

Answer

y = 2x + 1.5x + .25

Question 2

The scatter plot shows the the cost of gas per gallon during certain years.

How can the trend line equation be used to predict the cost of gas per gallon in the year 1992?

Accepted Answer

Substitute 22 for x in the equation

Answer

Substitute 92 for x in the equation

Answer

Substitute 92 for y in the equation

Answer

Substitute 22 for y in the equation

Question 3

The scatter plot shows the the cost of gas per gallon during certain years. Paul want to know when gas would have cost about $1.50 per gallon. What step should he take?

Accepted Answer

Substitute 1.50 for y in the equation

Answer

Add 1.50 to the y-intercept of the equation

Answer

Substitute 1.50 for x in the equation

Answer

Add 1.50 to the slope of the equation

Question 4

The scatter plot shows the the cost of gas per gallon during certain years.

Use the trend line equation to predict the cost of gas per gallon in 2017.

Accepted Answer

$2.60

Answer

$3.50

Answer

$1.70

Answer

$4.40

Question 5

What is the slope of the line, in the standard (x,y) coordinate plane, that is parallel to x + 5y = 9 ?

Accepted Answer

-1/5

Answer

-5

Answer

1/5

Answer

9/5

Answer

9

Question 6

Which of the following situations does not have the same unit rate as the graph shown?

Accepted Answer

Richie earns $10 every 2 hours to pet sit for his neighbor.

Answer

Asher buys gum for $0.20 a piece.

Answer

A daycare has six workers for every 30 children.

Answer

Melanie reads 9 pages of her book every 45 minutes.

Question 7

Using the graph, determine the equation of the line.

Accepted Answer

y = 5x

Answer

y = 10x

Answer

y = 1/5x

Answer

y = 1/10x

Question 8

A line is perpendicular to y = 2x - 7.
What is the slope of this line?

Accepted Answer

-1/2

Answer

-2

Answer

1/2

Answer

2

Question 9

Determine the slope of the line given by the equation $$x = -7$$ .

Accepted Answer

Undefined

Answer

Positive

Answer

Negative

Answer

Zero

Question 10

A line is perpendicular to -2x+y = - 7.
What is the slope of this line?

Accepted Answer

-1/2

Answer

-2

Answer

1/2

Answer

2

Question 11

Question 11.

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 12

A vertical line has what kind of slope?

Accepted Answer

Undefined

Answer

0

Answer

Negatove

Answer

Positive

Question 13

Which equations have a rate of change (slope) greater than 1?

Accepted Answer

$$y=2x+1$$

Accepted Answer

$$y=5x-2$$

Accepted Answer

$$y=\frac{3}{2}x-7$$

Answer

$$y=\frac{1}{2}x+4$$

Question 14

What is the slope of a line that is parallel to the line containing (-11, 5) and (-6, 1)?

Accepted Answer

$$-\frac{4}{5}$$

Answer

$$-\frac{5}{4}$$

Answer

$$\frac{4}{5}$$

Answer

$$\frac{5}{4}$$

Question 15

What is the slope of a line containing the points (-2, 5) and (3, 1)?

Accepted Answer

$$-\frac{4}{5}$$

Answer

$$-\frac{5}{4}$$

Answer

$$\frac{4}{5}$$

Answer

$$\frac{5}{4}$$

Question 16

What is the slope of a line containing the points (-2, 5) and (3, 1)? HINT: Create a table using DESMOS

Accepted Answer

$$-\frac{4}{5}$$

Answer

$$-\frac{5}{4}$$

Answer

$$\frac{4}{5}$$

Answer

$$\frac{5}{4}$$

Problem Solving with Slope

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